What are the black stains in my toilet, and how can I remove them?
Q: My old toilet has black stains where you see water, not on the sides of the bowl. I have tried using Zep Acidic Toilet ...
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If You See a Black Spot on a Tooth, Experts Share What It Could Mean
That black spot on your tooth might be a stain A black spot could also be a stain on your tooth. “Stains usually appear as smooth, uniform discoloration on the tooth’s surface and are commonly ...